資源描述:
《Accelerated Aging and Contact Degradation of CIGS Solar Cells.pdf》由會員上傳分享,免費在線閱讀,更多相關(guān)內(nèi)容在學術(shù)論文-天天文庫。
1、514IEEEJOURNALOFPHOTOVOLTAICS,VOL.3,NO.1,JANUARY2013AcceleratedAgingandContactDegradationofCIGSSolarCellsThomasOtt,ThomasWalter,DimitriosHariskos,OliverKiowski,andRaymundSchaf?er¨AbstractThelong-termstabilityofsolarcellsisacrucialfactorasedconditionsinthedark,e.g.,in[3].Furthermore,activat
2、ionforthecompetitivenessofatechnology.Inthisstudy,theacceler-energiesforparameterdriftsofopen-circuitvoltageand?llatedagingofCu(In,Ga)Se2(CIGS)solarcellswasstudied,andfactor(FF)atelevatedtemperaturesweredeterminedandthethein?uenceofanappliedbiasduringtheendurancetestonthemeantimetofailure(
3、MTTF),well-knownfromthereliabilityopen-circuitvoltageVocand?llfactor(FF)wasinvestigated.Timeconstantsforparameterdriftsoftheopen-circuitvoltageandtheofmicroelectronicscircuits,wascalculated[4]inordertoassessassociatedactivationenergyweredetermined.Theobservedpa-andextrapolatethelifetimeoft
4、hedevicesundernormalopera-rameterdriftswillbediscussed,andamodelwillbeproposedtionconditions(NOCT).Resultsoftheselife-timepredictionsbasedonsolarcellcapacitancesimulator(SCAPS)simulations,ex-seemednottobecriticalforparameterssuchasopen-circuitplainingtheobservedbehavioroftheelectricalchara
5、cteristicsofvoltageandFF.Inaddition,thein?uenceofanappliedpositivethesolarcells.Therefore,cellsweredarkannealedunderdrycon-ditionsattwodifferenttemperaturesanddifferentvoltagebiasesornegativebiasduringtheendurancetestswasinvestigatedbywereappliedtothecells.Ourstudyrevealedthattheapplicatio
6、nseveralstudies,e.g.,see[5].Itwasobservedthattheleveloftheofapositivebias,whichissimilartolightsoaking,?rstleadstoanopen-circuitvoltageremainsconstantaftera?rstfastincreaseorimprovementandstabilizationoftheopen-circuitvoltageandFFdecreaseaffectedbyanappliedpositiveornegativebias.Itcouldfol
7、lowedbyaslowdecreaseoftheseparameters.Thislong-termbealsoshownthattheapplicationofapositivebiascorrespondsdecreasecanbeexplainedintermsofabackbarrierorphoto-transistor,assimulatedwithSCAPS.However,applyingapositivetothesituationofalightsoak.Furthermore,theseex